<template>
    <el-form class="login-form" status-icon :rules="loginRules" ref="loginForm" :model="loginForm" label-width="80px">
        <el-form-item prop="username" label="用户：">
            <el-input v-model="loginForm.username" auto-complete="off" placeholder="请输入用户名" size="medium" @keyup.enter.native="submitForm('loginForm')"></el-input>
        </el-form-item>
        <el-form-item prop="password" label="密码：">
            <el-input :type="passwordType" v-model="loginForm.password" auto-complete="off" placeholder="请输入密码" size="medium">
                <i class="el-icon-view el-input__icon" slot="suffix" @click="showPassword"></i>
            </el-input>
        </el-form-item>
        <el-form-item prop="code">
            <el-row :span="24">
                <el-col :span="12">
                    <el-input v-model="loginForm.code" auto-complete="off" placeholder="请输入验证码" size="" @keyup.enter.native="submitForm('loginForm')"></el-input>
                </el-col>
                <el-col :span="12">
                    <div class="login-code" @click="refreshCode">
                        <!--验证码组件-->
                        <s-identify :identifyCode="identifyCode"></s-identify>
                    </div>
                </el-col>
            </el-row>
        </el-form-item>
        <el-form-item>
            <el-button type="primary" @click="submitForm('loginForm')" class="login-submit">登录</el-button>
        </el-form-item>
    </el-form>
</template>

<script>
import { isLoginName } from '@/util/validate'
import SIdentify from './sidentify'
export default {
  name: 'userLogin',
  components: { SIdentify },
  data () {
    const validateCode = (rule, value, callback) => {
      if (this.identifyCode !== value) {
        this.loginForm.code = ''
        this.refreshCode()
        callback(new Error('请输入正确的验证码'))
      } else {
        callback()
      }
    }
    return {
      isDebugLogin: false,
      loginForm: {
        username: '',
        password: '',
        code: ''
      },
      identifyCodes: '1234567890',
      identifyCode: '',
      loginRules: {
        username: [
          { required: true, trigger: 'blur', message: '请输入用户名' },
          { min: 1, max: 200, message: '长度在1-200字符之间', trigger: 'blur' },
          { validator: isLoginName, trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 1, max: 100, message: '长度在1-100字符之间', trigger: 'blur' }
        ],
        code: [
          { required: true, message: '请输入验证码', trigger: 'blur' },
          { validator: validateCode, trigger: 'blur' }
        ]
      },
      passwordType: 'password'
    }
  },
  watch: {
    isDebugLogin (v) {
      if (v) {
        this.loginForm.password = '123'
        this.refreshCode()
      }
    },
    identifyCode (v) {
      this.isDebugLogin && (this.loginForm.code = v)
    }
  },
  methods: {
    randomNum (min, max) {
      return Math.floor(Math.random() * (max - min) + min)
    },
    refreshCode () {
      this.identifyCode = ''
      this.makeCode(this.identifyCodes, 4)
    },
    makeCode (o, l) {
      for (let i = 0; i < l; i++) {
        this.identifyCode += this.identifyCodes[this.randomNum(0, this.identifyCodes.length)
        ]
      }
    },
    showPassword () {
      this.passwordType === ''
        ? (this.passwordType = 'password')
        : (this.passwordType = '')
    },
    submitForm (formName) {
      this.$refs[formName].validate(valid => {
        if (valid) {
          console.log('授权成功')
        } else {
          return false
        }
      })
    }
  },
  created () {
    this.refreshCode()
  }
}
</script>

<style>
.login-form .el-input__inner {
    height: 40px;
    line-height: 40px;
}
.login-form .el-form-item__label {
    line-height: 40px;
}
.login-submit.el-button {
    padding: 12px 20px;
}
</style>
<style lang="scss" scoped>
.login-form {
    padding: 10px 0;
    .el-form-item + .el-form-item {
        margin-top: 30px;
    }
    .login-code {
        cursor: pointer;
        .login-code-img {
            width: 100px;
            height: 38px;
            background-color: #eee;
            border: 1px solid #f0f0f0;
            color: #333;
            font-size: 18px;
            font-weight: bold;
            letter-spacing: 2px;
            text-indent: 2px;
            text-align: center;
        }
    }
    .login-submit {
        width: 100%;
        border: 0;
    }
}
</style>
